Module | Sequel::MySQL::DatabaseMethods |
In: |
lib/sequel/adapters/shared/mysql.rb
|
AUTO_INCREMENT | = | 'AUTO_INCREMENT'.freeze |
CAST_TYPES | = | {String=>:CHAR, Integer=>:SIGNED, Time=>:DATETIME, DateTime=>:DATETIME, Numeric=>:DECIMAL, BigDecimal=>:DECIMAL, File=>:BINARY} |
PRIMARY | = | 'PRIMARY'.freeze |
Return a hash containing index information. Hash keys are index name symbols. Values are subhashes with two keys, :columns and :unique. The value of :columns is an array of symbols of column names. The value of :unique is true or false depending on if the index is unique.
Does not include the primary key index or indexes on partial keys.
# File lib/sequel/adapters/shared/mysql.rb, line 32 32: def indexes(table) 33: indexes = {} 34: remove_indexes = [] 35: m = output_identifier_meth 36: im = input_identifier_meth 37: metadata_dataset.with_sql("SHOW INDEX FROM ?", SQL::Identifier.new(im.call(table))).each do |r| 38: name = r[:Key_name] 39: next if name == PRIMARY 40: name = m.call(name) 41: remove_indexes << name if r[:Sub_part] 42: i = indexes[name] ||= {:columns=>[], :unique=>r[:Non_unique] != 1} 43: i[:columns] << m.call(r[:Column_name]) 44: end 45: indexes.reject{|k,v| remove_indexes.include?(k)} 46: end
Get version of MySQL server, used for determined capabilities.
# File lib/sequel/adapters/shared/mysql.rb, line 49 49: def server_version 50: m = /(\d+)\.(\d+)\.(\d+)/.match(get(SQL::Function.new(:version))) 51: @server_version ||= (m[1].to_i * 10000) + (m[2].to_i * 100) + m[3].to_i 52: end
Return an array of symbols specifying table names in the current database.
Options:
# File lib/sequel/adapters/shared/mysql.rb, line 58 58: def tables(opts={}) 59: m = output_identifier_meth 60: metadata_dataset.with_sql('SHOW TABLES').server(opts[:server]).map{|r| m.call(r.values.first)} 61: end